The term 'SONG FROM 'THE SOUND OF MUSIC'' can be broken down into three crossword solutions: MARIA (5 letters), EDELWEISS (9 letters), and DOREMI (6 letters). 'Maria' is a song from the musical 'The Sound of Music' composed by Richard Rodgers and lyrics by Oscar Hammerstein II. It is sung by the character Maria, played by Julie Andrews in the 1965 film adaptation. 'Edelweiss' is another song from the same musical, also composed by Rodgers and Hammerstein. It is sung by the character Captain Georg von Trapp, played by Christopher Plummer in the film. Lastly, 'Do-Re-Mi' is a song from the musical that is sung by Maria to the von Trapp children. It is also featured in the 1965 film adaptation.